AT&T has started rolling out new updates to LG G4 and V10 units on its network. Arriving as software version H81022c and H90021x, and weighing in at 273MB and 29.1MB, respectively, the updates include Android security patch for the month of November. Given that the updates have just started rolling out, it might take some time before the update notification pops up on your device's screen. Meanwhile, if you feel impatient, you can manually check for the update by heading to your handset's Settings menu. Via
Source: http://www.gsmarena.com/lg_g4_and_v10_on_at_t_getting_november_security_patch-news-22160.php